Hits:

Indexed by:期刊论文

Date of Publication:2012-09-01

Journal:SCIENCE OF ADVANCED MATERIALS

Included Journals:SCIE、Scopus

Volume:4

Issue:9

Page Number:901-905

ISSN No.:1947-2935

Key Words:K(1-x)A(x)DP Mixed Crystal; Chemical Bond; Hardness; Chemical Strain

Abstract:We have proposed an approach to characterize the anisotropy of mechanical property in K(1-x)A(x)DP crystallographic frame by the oriented distribution of chemical bond. The anisotropic hardness of K(1-x)A(x)DP crystals and their dependence on constituent concentration were quantitatively calculated. The hardness of K(1-x)A(x)DP decreases with increasing NH4+ concentration x. The detailed variation of chemical strain in the whole composition range was determined. The chemical strain along c-axis quickly accumulates with increasing the content of NH4+ and reaches the biggest when x approaches to 0.6. The current work indicates that the oriented distribution of bond valence captures the main interaction of crystal materials and can be utilized for the description of crystal anisotropy.